Tile cutting machine



May 10, 1932.

E. H. WOLBER TILE CUTTING MACHINE Filed Jan. 19 1931 m w m w @H@% Q 2% 3m INVENTOR EIHPVoZber I g Z JM/LW ATTORNEY Patented May 10, 1932 UNITEDSTATES *nmt'nsr H. woman, or omn'ronnnw JERSEY.

TILE" CUTTING MAoHiNE Application filed January 19,1931. "Seria1 1q'o.509;647.

The main object of this invention is to provide'a machine for cuttingand fracturing tile or the like upon a predetermined line.

Another object of theinvention is to pro- 5 vide a tile cutting machinefor dividing tile or ceramics and utilizes a disk mounted on a spindlewhosepressure on the tile may be augmented by the manipulation of alever.

' The above and other objects willbecome apparent in the descriptionbelow in which characters of'reference refer to like-named parts in thedrawings.

lieferring briefly to the drawings; Figure l is a top plan view of theassembled tile cutting machine.

V Figure 2 is'a side elevational view of Figurel showing the coverremoved to illustrate the mechanism.

Figure 3 is a front elevationalviewof the spindle operating lever andpressure trigger.

Figure 4: is a sectional end elevatio-nal View taken online H of Figure2. 7

Referring in detail to the drawings the numeral 10 indicates asubstantial rectangular platen which is dished outon its under side toprovide a space in which bosses 11 and 12, spaced apart from each other,are provided. The'bosses integral with the platen are-arranged onopposite sides of an opening through which the periphery of a knurledroller .14; is visible. The roller is firmly secured to a rotatableshaft 13 which ispro vided with an actuating crank 15 at its outer end.At the rear corners of the platen sleeves 16 are integrally formed inwhich parallel bores are provided. These bores have slidably mountedtherein adjustable rods 17 which are connected at one end by a spacerstrap 18. Said rods are secured inany adjusted position by thumb screws19. The surface of the platen is provided with linear gra'duations20--along its opposing marginal edges which are cooperated with by thestrap when setting and alighting the latter.

Between the sleeves at the same end of the platen an upright hollow arm21 extends.

The chamber 22 in this hollow arm houses the mechanism for actuating-aspindle which will be more fully hereinafter. described.

- This'right angled arm 21is provided with a roof-member 23 from which alug 24-extends downwardly. The lug has pivotally attached thereto on apin 25,.pressurebar 26. The; pressure bar is 1 provided with a longerand shorter end. The shorter end of the pressure bar has a coil spring27 secured thereto. Said spring extends diagonally downward and isdirectly attached to the lowerportion of the arm of the device.

Enlargements 28. and 29 are formed on the outer extremity of the .armand are spaced apart from each other. I These enlargements have alignedsquare openings therein' which slidablyv receive a square spindle- 30.The loweren'd-of the square spindle 30 projects beneath the enlargement29 and is bifurcated so that a cutting disk 31 may be anchoredbetweenthe bifurcations upon a pin 32 which is secured in-place bycotter pins or the like. The enlargements 28 and 29 serve as anchoringmembers uponwhich the ends of a toothed rack'ba'r 33 is secured. Thepressure lever 26. extends outwardly beyond the toothed rack bar betweenthe enlargements 28 and 29 and adjacent to the rack bar.v The teeth 34'of the rack bar are engaged by the lip 35 ofa pivoted 'trigger 36 whichis fulcrumed at 37 The longer end of the pressure lever is deformed intoa right angledextension 38 Which serves as aguard for the operator ofthe device. The trigger 36 hasan offset finger-plate 39 thereon which iscontacted with when the trigger is manipulated. Thelonger end ofthetrigger isnormally urged into raised position by a coil spring 40which lattcr'is housed in a cup 41'forming an integral part ofthepressure lever.v v

. A bell crank is pivotally mounted on a pin 42 on the pressure lever.This bell crank is an obtuse angled member 'comprisinga long arm 43 anda short arm 44. The short arm i l-is slotted horizontally as indicatedby the numeral 45 and this slot receives a pin 46 which latterisfinally-anchoredon andprojects from the side of the square spindle 30.The longer arm 43 of-the bell crank describes aradial-arc in passingthrough its movement and itsouter end is adapted to proj ectthrough anaperture 47 located in the bottom 48 of the arm 21 when saidspindle hasbeenlowered. The

a cutting disk, the pressure lever 26 is lowered short arm 44 of thebell crank is adapted to be normally lowered when a coil spring 49 istensed by the lowering of the pressure lever.

V The device is adapted to serve as a. tile cut- 5 ting machine or forother similar ceramics in either glazed or plain finish. The tile isplaced upon a knurled roller 14 and rolled across'the platen l0 beneaththe cutting disk 31 by rotation of the crank 15. When a tile has beenplaced upon the roller beneath the by manipulating the extension. 38.This pressure lever will carry with it in its arcuate swing the bellcrank comprising the short and 7 long arms 44 and 43 and the trigger 36.The trigger will trip over the tips of the rack teeth 34 of the rack bar33 and will engage the tooth at which downward pressure on the pressurebar 26 is released. As this downward swing of the pressure bar occursthe bell crank being 'inengagement with the spindle 80 through themedium of the pin 46 will lower this spindle and when resistance againstany additional downward movement of the'spindle is had as the cuttingdisk contacts with the surface of the tile, the bell crank will then becaused to rotate in a counter-clockwise direction while the pressure bar26 is being lowered and when the arm 44 of this obtuse angled bell crankrotates in a counter-clockwise direction the longer arm 43 beingintegral with the shorter arm will rotate with the latter and will tensethe coil spring: 49. This coil spring when tensed will augment orincrease'the tension of the pressure lever upon the tile surface andwill consequently cause the disk to bite deeper into the tile and as thelatter is rolled across the path of the cutting disk 31 the same isdivided or sheared.

-'It is to be noted that certain changes in form and construction may bemade without changing the scope or spirit of the invention.

I claim:' 7

1. In a tile cutting machine, a spindle, means on said spindle forcutting a tile, means for adjusting the position of said tile, means forlowering said spindle to cutting position, andmeans for exertingacontinuous downward pressure on said spindle.

2.' In a tile cutting machine, a slidable nonrot'atable spindle, mean onsaid spindle "for cutting a tile, means for conveying a tile under saidspindle, slidable means'for adjusting the position of a tile, a spindlelowering bar, releasablemeans for locking said bar inlowered position,and means on said bar engaging said spindle for exerting a continuousdownward'pressure on said spindle. 1

3. In a 'tile cutting machine, a platen, a right angled arm thereon, aspindle slidable in said arm, a cutting disk on said arm, rods, sleeveson said platen receiving said rods, means secured to said rods foradjusting the position of a tile, means for conveying a tile under saidcutting disk, a pivoted spindle lowering bar, releasable means forlocking able in said sleeves, a strap rigid with one end of said rodsspanning said platen, graduated scales on said platen cooperating withsaid strap, means for conveying a tile under said cutting-disk, apivotedspindle lowering bar, releasable means forlocking said bar inlowered position,.and means onsaid bar engaging said spindle forexerting a continuous downward pressure on said spindle.

- 5. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable Vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryof said roller being raised above the surface of said platen, a crankadapted to rotate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, releasable means forlocking said bar in lowered position and means on said bar engaging saidspindle for exerting a continuous downward pressure on said spindle.

6. In a tile cutting machine,- a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the

periphery of said roller being raised above the surface of said platen,a crank adapted to rotatesaid roller to convey tile across said platen,a spindle lowering bar indesaid spindle, and means mounted on said barengaging said spindle'for causing said spindle to move with said barwhen said bar is lowered.

7 In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position i locking said bar in loweredposition, and meanson said bar engaging said spindle for exerting acontinuous downward pressure on said spindle, and means mounted on saidbar engaging said spindle for causing said spindle to move with said barwhen said bar is lowered.

8. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryof said roller being raised above the surface of said platen, a crankadapted to rotate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, a rack on said arm anda trigger pivoted on said bar engagably with said rack for retainingsaid bar in lowered position, and means on said bar engaging saidspindle for exerting a continuous downward pressure on said spindle, andmeans mounted on said bar engaging said spindle for causing said spindleto move with said bar when said bar is lowered.

9. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryof said roller being raised above the surface of said platen, a crankadapted to rotate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, a rack on said arm anda trigger pivoted on said bar engageably with said rack for retainingsaid bar in lowered position, and means on said bar engaging saidspindle for exerting a continuous downward pressure on said spindle, abell crank pivoted on said bar, and means for causing engagement of saidbell crank with said spindle.

10. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryof said roller being raised above the surface of said platen, a crankadapted to rotate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, a rack on said arm anda trigger pivoted on said bar engageably with said rack for retainingsaid bar in lowered position, and means on said bar engaging saidspindle for exerting a continuous downward pressure on said spindle, abell crank pivoted on said bar, said bell crank having a slotted end andmeans on said spindle engaged in said slotted end of said bell crank forrotating said bell crank when said spindle is lowered.

11. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryofsaid roller being raised above the surface of said platen, a crankadapted to rotate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, a rack on said arm anda trigger pivoted on said bar engageably with said rack for retainingsaid bar in lowered position, and meanson said bar engaging said spindlefor exerting a continuous downward pressure on said spindle, a bellcrank pivoted on said bar, said bell crank having a slotted end, a pinon said spindle registering in the slotted end of said bell crank andmeans connected to said bell crank for causing said spindle to exert acontinuous pressure on a tile when said spindle is lowered by said bar.

12. In a tile cutting machine, a support platen, a right angled armthereon, a spindle movable vertically in said arm, a cutting disk onsaid arm, means for adjusting the position of a tile beneath saidcutting disk, a roller rotatably mounted in said platen, the peripheryof said roller being raised above the surface of said platen, a crankadapted to 1'0- tate said roller to convey tile across said platen, aspindle lowering bar independent of said spindle, a rack on said arm anda trigger pivoted on said bar engageably with said rack for retainingsaid bar in lowered position, and means on said bar engaging saidspindle, a bell crank pivoted on said bar, said bell crank having aslotted end, a pin on said spindle registering in the slotted end ofsaid bell crank and a coil springsecured to said bell crank for causingsaid spindle to be urged downwardly when said bar lowers said spindle. a

In testimony whereof I afi'ix my signature.

ERNEST H. WOLBER.

